Physical sciences topic list of research papers
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Hadronic contribution to the muon anomalous magnetic moment to next-to-next-to-leading order
Abstract We compute the next-to-next-to-leading order hadronic contribution to the muon anomalous magnetic moment originating from the photon vacuum polarization. The corresponding three-loop kernel functions are calculated using asymptotic...
2014 / Alexander Kurz, Tao Liu, Peter Marquard, Matthias Steinhauser -
An algebraic approach applied to the determination of the polarizability in CO 22014 / R Lemus, M Sánchez-Castellanos, M Carvajal
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Modified the optical and electrical properties of CR-39 by gamma ray irradiation
Abstract The radiation technique is a useful technology technique to induce suitable modifications of the polymeric materials. In the present work, poly allyl diglycol carbonate (CR-39) solid state nuclear track detector samples were irradiated...
2014 / A.M. Abdul-Kader, M.F. Zaki, Basma A. El-Badry -
The role of constraints in a segregation model: The symmetric case
Abstract In this paper we study the effects of constraints on the dynamics of an adaptive segregation model introduced by Bischi and Merlone (2011) [3]. The model is described by a two dimensional piecewise smooth dynamical system in discrete time....
2014 / Davide Radi, Laura Gardini, Viktor Avrutin -
Nonlinear dynamics of a self-excited thermoacoustic system subjected to acoustic forcing
Abstract We experimentally study the nonlinear dynamics of a self-excited thermoacoustic system subjected to acoustic forcing. Our aim is to relate these dynamics to the behavior of universal model oscillators subjected to external forcing. ...
2014 / Saravanan Balusamy, Larry K.B. Li, Zhiyi Han, Matthew P. Juniper, Simone Hochgreb -
Non-Bunch–Davis initial state reconciles chaotic models with BICEP and Planck
Abstract The BICEP2 experiment has announced a signal for primordial gravity waves with tensor-to-scalar ratio r = ...
2014 / Amjad Ashoorioon, Konstantinos Dimopoulos, Mohammad M. Sheikh-Jabbari, Gary Shiu -
Ferromagnetism in the austenitic and martensitic states of Ni − Mn − In alloys2006 / Thorsten Krenke, Mehmet Acet, Eberhard F. Wassermann, Xavier Moya, Lluís Mañosa, et al.
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Vibrationally resolved K-shell photoionization cross sections of methane2013 / Etienne Plésiat, Piero Decleva, Fernando Martín
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Cosmological constraints on ghost dark energy in the Brans–Dicke theory by using MCMC approach
Abstract By using a Markov Chain Monte Carlo simulation, we investigate cosmological constraints on the ghost dark energy (GDE) model in the framework of the Brans–Dicke (BD) theory. A combination of the latest observational data of the cosmic...
2014 / Hamzeh Alavirad, Ahmad Sheykhi -
Improved Epstein–Glaser renormalization in x-space versus differential renormalization
Abstract Renormalization of massless Feynman amplitudes in x-space is reexamined here, using almost exclusively real-variable methods. We compute a wealth of concrete examples by means of recursive extension of distributions. This allows us to show...
2014 / José M. Gracia-Bondía, Heidy Gutiérrez, Joseph C. Várilly -
Reconstructing Higgs boson properties from the LHC and Tevatron data2012 / Pier Paolo Giardino, Kristjan Kannike, Martti Raidal, Alessandro Strumia
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Singularity avoidance in classical gravity from four-fermion interaction
Abstract We derive the dynamics of the gravitational collapse of a homogeneous and spherically symmetric cloud in a classical set-up endowed with a topological sector of gravity and a non-minimal coupling to fermions. The effective theory consists...
2014 / Cosimo Bambi, Daniele Malafarina, Antonino Marcianò, Leonardo Modesto -
Existence of non-Abelian vortices with product gauge groups
Abstract In this paper we establish several sharp existence and uniqueness theorems for some non-Abelian vortex models arising in supersymmetric gauge field theories. We prove these results by studying a family of systems of elliptic equations with...
2013 / Xiaosen Han, Chang-Shou Lin -
Dilaton-derived quintessence scenario leading naturally to the late-time acceleration of the Universe
Abstract Quintessence scenarios provide a simple explanation for the observed acceleration of the Universe. Yet, explaining why acceleration did not start a long time ago remains a challenge. The idea that the transition from radiation to matter...
2002 / Rachel Bean, João Magueijo -
Photon decay at the Schwarzschild horizon
Abstract A recent proposal that gravity theory is an emergent phenomenon also entails the possibility of photon decay near the Schwarzschild event horizon. We present a possible mechanism for such decay, which utilizes a dimensional reduction near...
2002 / B. Altschul, R. Jackiw -
Confinement in three-dimensional magnetic monopole–dipole gas
Abstract Confinement of electrically charged test particles in the dilute plasma of monopoles and pointlike magnetic dipoles is studied. We calculate the tension of the string emerging between the infinitely separated test particles. The string...
2002 / M.N. Chernodub -
Scaling violations of diffractive structure functions: operator approach
Abstract A quantum field theoretic treatment of inclusive deep-inelastic diffractive scattering is given. The process can be described in the general framework of non-forward scattering processes using the light-cone expansion in the generalized...
2002 / Johannes Blümlein, Dieter Robaschik -
Infrared regularization with spin-3/2 fields
Abstract We present a Lorentz-invariant formulation of baryon chiral perturbation theory including spin-3/2 fields. Particular attention is paid to the projection on the spin-3/2 components of the delta fields. We also discuss the nucleon mass and...
2003 / Véronique Bernard, Thomas R. Hemmert, Ulf-G. Meißner -
Quintessence and the underlying particle physics theory
Abstract At present we know nothing about the nature of the dark energy accounting for about 70% of the energy density of the universe. One possibility is that the dark energy is provided by an extremely light field, the quintessence, rolling down...
2003 / D.J.H. Chung, L.L. Everett, A. Riotto -
Higher-dimensional origin of heavy sneutrino domination and low-scale leptogenesis
Abstract If the expectation value of the right-handed (rhd) sneutrino comes to dominate the universe, its decay naturally leads to successful leptogenesis, as well as significant dilution of dangerous inflationary relics, such as the gravitino. The...
2003 / A. Hebecker, J. March-Russell, T. Yanagida